{"nhtsa_id":10188824,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-15","date":"2021-02-24","document_id":"18-023-21","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. The customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs.P20EE - SCR NOx Catalyst Efficiency Below Threshold - Bank 1. P1C54 - SCR NOx Catalyst Missing. P229F - Aftertreatment NOx Sensor Circuit Performance - Bank 1 Sensor 2. P207F - Reductant Quality Performance. P2002 - Diesel Particulate Filter Efficiency Below Threshold. P2201 - Aftertreatment NOx Sensor Circuit Performance - Bank 1 Sensor 1. P202E - (Diesel Exhaust Fluid) Reductant Injector Performance. P0300 - Multiple Cylinder Misfire. P0301-00 - Cylinder 1 Misfire. P0302-00 - Cylinder 2 Misfire. P0303-00 - Cylinder 3 Misfire. P0304-00 - Cylinder 4 Misfire. P0305-00 - Cylinder 5 Misfire. P0306-00 - Cylinder 6 Misfire. P249E - Closed Loop SCR Reductant Injection Control At Limit - Flow Too High. P0401 - EGR System Performance. P0128 - Thermostat Rationality. P218F - Reductant No Flow Detected. U0001-00 - CAN C BUS. P24A5 - EGR Cooler Bypass Bank 1 Control Stuck. P1451 - Diesel Particulate Filter System Performance. P229E - NOx Sensor Circuit - Bank 1 Sensor 2. P2281 - Air Leak Between MAF and Throttle Body. P0218 - Transmission High Temperature Operation Activated (68RFE Only). P0868 - Line Pressure Low, MIL Action (68RFE Only). U110E - Lost Ambient Temperature Message. P205E - (Diesel Exhaust Fluid) Reductant Tank Temperature Sensor Circuit Intermittent (setting when the block heater is plugged in). The following Diagnostic Trouble Codes (DTCs) have been changed from a one trip fault to a two trip fault:P0421 - Catalyst 1 Efficiency Below Threshold Bank 1. P2280 - Air Flow Restriction / Leak Between Air Cleaner And MAF. P203C - (Diesel Exhaust Fluid) Reductant Level Sensor Circuit Low.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10188824-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10188824-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10188824","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0128","P0218","P0300","P0301","P0302","P0303","P0304","P0305","P0306","P0401","P0421","P0868","P1451","P1C54","P2002","P202E","P203C","P205E","P207F","P20EE","P218F","P2201","P2280","P2281","P229E","P229F","P249E","P24A5","U0001","U110E"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_ram_2500"]},{"make":"RAM","model":"3500","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_ram_3500"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}